public DataDefinition::setReadOnly($read_only)

public DataDefinition::setLabel($label)

public DataDefinition::setSetting($setting_name, $value)

Interface for data definitions of lists. This interface is present on a data definition if it describes a list. The actual lists implement the

An array of validation constraints for this type. Type:

public TypedDataMetadata::__construct(TypedDataInterface

A typed data definition class for the entity reference target_id property. The target_id property differs from other data definitions in that

public DataDefinition::toArray() Returns

The human-readable name of the data type. Type:

public DataDefinitionInterface::isReadOnly()